Distribution characteristics of mercury in coal and gangue from Mid-west China and its environment impact
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摘要: 采用原子荧光光谱仪测定了陕西、山西、云南、山东以及河南等地一些煤、电厂炉渣、飞灰等样品中汞元素的质量分数。检出限为0.01×10-6。除淮南地区的个别样品外,多数样品中汞的质量分数处于世界多数煤和中国多数煤中Hg质量分数范围内,少数高于世界煤炭汞质量分数的平均值(0.02×10-6~1.0×10-6)。不同地层间、不同类型样品间汞的质量分数有较大差别:上石盒子组中的>山西组中的>太原组中的;飞灰中的汞质量分数明显大于炉渣中的汞质量分数;褐煤中的汞质量分数高于无烟煤中的。Abstract: Mercury(Hg) in 62 samples of coal,gangue from Shaanxi,Shanxi,Yunnan,Shandong and Henan Provinces was analyzed by AFS(atomic fluorescence spectrometry)in order to investigate its environment impact.The detection limit of this method is 0.01×10-6.The results show that the average concentration of Hg is in the range of the data about coal published about the world and China,but higher than the mean of the world coal(0.02×10-6~1.0×10-6).And the concentration varied with its geologic origin.The concentration of Hg in coals from Shihezi Formation is higher than from Shanxi Formation,much higher than that from Taiyuan Formation;that in fly-ash is higher than the waster residue;According to these data and previous data,the situation of Hg in the coal is summarized and its environment impact is discussed.
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Keywords:
- coal /
- gangue /
- trace element /
- mercury /
- environment impact
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